Lawn-mower.



No. 848,961. I PATENTBD FEB. 12, 1907.

w. W. MGOARTY.

LAWN MOWER.

APPLICATION FILED JULY 31 1906.

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WILLIAM WILEY MCCARTY, OF DIAMOND, INDIANA.

LAWN-=WlOWER.

Specification of Letters Patent.

Patented Feb. 1.2, 1907.

Application filed July 31,1906. Serial No. 328,590.

To all whom it may concern/.-

Be it known that I, WILLIAM WILEY Mo- CARTY, a citizen of the UnitedStates, residing at Diamond, in the county of Parke and State ofIndiana, have invented certain new and useful Improvements inLawn-Mowers; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to mowing machines; and it consists in the novelconstruction and combination of the parts or attachments hereinafterfully described and claimed, whereby the machine is specially adaptedfor cutting grass under fences and in other similar confined places.

In the drawings, Figure 1 is a plan view of the mower with theguard-plate removed. Fig. 2 is a longitudinal section through the mower,taken on the line as r in Fig. 1. Fig. 3 is a rear view of the cuttingmechamsm.

A are the ground-wheels of a hand lawnmower of any approvedconstruction. These wheels are mounted on an axle a, and B is a tubularshaft also mounted on the said axle and having frame-plates or disks 1)secured to its ends. C is a cross-bar between the said frame-plates, andc is a handle also secured to the said plates for pushing or pulling themachine along. C is a second crossbar similar to the cross-bar C; butthis cross-bar C may be omitted, if desired. One of the ground-wheels isprovided with internal teeth D. All the above-mentioned parts are of anyapproved construction, and the lawn-mower may also have cuttingmechanism of any approved construction (not shown in the drawings) foruse in mowing lawns in the usual way.

In order to enable the machine to cut grass under fences and in otherconfined places which cannot be reached by the ordinary cuttingmechanism, an auxiliary frame and speciallycontrived cutting mechanismis provided.

E are two arms which form the side plates of the auxiliary frame. Thesearms are provided near their upper ends with notches e, which areslipped into engagement with the cross-bar C F is a shaft which isjournaled in the upper ends of the arms E, and fis an eccentric securedon the middle portion of the'said shaft.

A toothed piniond is secured on the projecting end portion of the saidshaft, and it engages with the teeth D. The lower end portions of thesaid arms have a ground-plate f secured to them, and the lower endportions e of the said arms close above the ground-plate form twoparallel bars;

G are two guid e-pillars secured to the middle portions of theground-plate and projecting upwardlyfromit. II is a serratedcuttingblade arranged upon the said pillars and between the said bars.This cutting-blade rests upon the ground-plate, but is. not rigidlysecured to it, so that it is free to slide upwardly upon theguide-pillars to a limited extent. I is the upper serrated cuttingblade,which is provided with slots t, engaging with the said guide-pillars, soas to be slidable crosswise of the auxiliary frame. A socket i is formedin the rear part of the blade I. blades H and I are free to slideupwardly to a limited extent. The bars 0 form guides for the lower bladeH, and the ground-plate normally supports it, so that the said lowerblade is carried by the auxiliary frame without being rigidly secured toit. The blade H cannot slide endwise because of the said bars 6; but theupper blade I is free to slide endwise and is reciprocated over thelower blade. By supporting the blades in this manner without rigidlysecuring the lower blade to the auxiliary frame the machine orattachment is better adapted to cut weeds and grass in rough places andunder fences which cannot be reached by the ordinary mowingmachine. J isa bracket or plate secured to the tops of the said guide-pillars andprovided with a pin K is a bell-crank lever pivoted on the pin j andprovided with a projecting arm 7c,which engages with the socket t of theupper cutting-blade L is a connecting-rod which is pivoted to the otherarm of the said bellcrank lever and which is slidable in a guide m,secured crosswise between the two arms of the auxiliary frame.

N is an eccentric-rod pivoted to the connecting-rod by a pin a andprovided with an eccentric-strap which engages with the eccentric f. i

P is a guard-plate arranged over the working parts and secured to thebracket J or any other convenient part, so as to prevent grass fromfalling into the working parts.

When the machine is pushed back and As will be seen in Fig. 3, both aforth by'means of the handle, the shaft F is revolved and the motion iscommunicated to the bell-crank lever by means of the'eccentrio andeccentric-rod, so that the upper cutand into other places which cannotbe reached otherwise.

Both cutting-blades H and I are-free to slide vertically upon the guidesG to a limited extent in the space between the platesf and J, and theupper blade I has more freedom to move vertically than the lower blade,which is not reciprocated laterally. This vertical motion of the twoblades enables them-tocut freelyinroughplaces. Thefrictional contact ofthe frame E with the cross-bar C is ordinarily sufficient to prevent thesaid frame from sliding'on the said bar; but any other approved meanscan be used to prevent the frame from sliding, if desired.

What I claim is 1. The combination, with the main frame ofa mower havinga cross-bar, and a toothed drivin -wheel of an auxiliar frame rovidedwith arms having notches near their upper ends for engaging with thesaid crossbar, cutting-blades carried by the lower parts of the saidarms, a shaft journaled at the up per parts of the said arms, a toothedpinion secured on the said shaft and engaging with the teeth of the saiddriving-wheel, and driving mechanism for reciprocating one of the saidblades from the said shaft.

2. The combination, with a mowing-machine provided'wit'h an axle, adriving-wheel upper plate secured to the said guides; of.

two cutting-blades slidable verticallyon the said guides between the twosaid plates, and means for reciprocating one of. the said cutiilngfblades crosswise of theother cuttingar e. 4 The combination, witha frame provided with aground-plate, guides projecting upwardly from thesaid ground-plate, and an upper plate secured to the said guides; of twocutting-blades slidable vertically on thesaid guides, a bell-crank leverpivotedto the said upper plate and engagingv with oneof the saidcutting-blades, and means for oscillating the said bell-crank lever and.thereby reciprocating one blade crosswise of the other.

In testimony whereof I have affixed my" W'itnesses CI-IAs. O. DOIDGE,NEWTON THOMAS.

